Rocket the dog is excited about the 100th day of school and enlists the help of his friends to collect one hundred special things to bring to class, from heart-shaped stones found with Mr. Barker to feathers Owl provides, but will he find enough items in time?

Hannah looks forward to Robin Hill School's celebration of one hundred days of classes, but when a cold keeps her home the day of the party she decides to bring in the one hundred buttons she found anyway.

"Nancy is stumped on what to bring to her 100th day of school celebration, but as she begins to lose hope, she finds inspiration from an unexpected source and learns that even sad events can bring with them a glimmer of beauty"--

To celebrate the one hundredth day of kindergarten, each student brings in an example of the number 100 for show-and-tell, including a 100-year-old relative, and Ms. Bradley shares the jar of 100 jelly beans that have marked the days.

Bringing dog treats as his contribution to 100th Day of School activities, Eliot is unknowingly followed to school by Tiny, whose enthusiastic participation in the festivities upends a hard-working classmate's table of 100 cookies.

Mama helps Stinky Face discover one hundred things he can bring to school that are special to him.

In their fourth adventure, classroom mice Fergus and Zeke--after a few false starts--jump into a creative project to help the kids mark the one hundredth day of school. Fergus and Zeke love being the class pets in Miss Maxwell's classroom, and they do everything the students do. But when the kids start collecting items and doing gym challenges and making projects to celebrate the one hundredth day of school, the mice can't seem to find a way to join...